<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>类继承-2</title>
</head>
<body>
    <script>
        class Phone {
            // 构造方法
            constructor(brand, price) {
                this.brand = brand;
                this.price = price;
            }

            // 父类的成员属性
            call () {
                console.log(`我可以打电话`);
            }
        }

        class SmartPhone extends Phone{
            // 构造方法
            constructor(brand, price, color, size) {
                super(brand, price);    // ==> Phone.call(this, brand, price)
                this.color = color;
                this.size = size;
            }

            photo () {
                console.log(`拍照`);
            }

            playGame () {
                console.log(`玩游戏`);
            }
        }

        const xiaomi = new SmartPhone(`小米`, 799, `黑色`, `4.7inch`);
        console.log(xiaomi);
        xiaomi.call();
        xiaomi.photo();
        xiaomi.playGame();
    </script>
</body>
</html>